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SPECIFICATION & OPTIONS INTRAC-305
Page 2 INTRAC-305 MANUAL - Issue 3.2 ©2011 Advantech Wireless
SPECIFICATION
Tracking Accuracy Typically <0.1dB RMS signal degradation after tracking for
30minutes (with tracking signal).
Prediction Accuracy Typically <0.1dB RMS signal degradation over 72hrs (after
loss of tracking signal).
Tracking Signal May be derived from an external tracking receiver or from the
(optional) Integral Beacon Receiver (IBR-L).
External DC voltage varying directly with received signal strength
(in dB). Scale factors between 0.1V/dB and 1.0V/dB can be
preset with up to 10V offset.
Internal Internal IBR-L requires an L-band signal with a level in the
range -80dBm to -45dBm and C/No >40dB. Stability better
than 150KHz. The received frequency is selected from the
INTRAC front panel.
The signal voltage and lock lost indicators are generated
internally.
Antenna Position Encoders Single resolver units. Operating frequency is 800Hz nominal.
Az & El The INTRAC-305 is designed to operate directly with
standard Andrew resolvers. Antennas used with the APC300
controller, for which the INTRAC-305 is a replacement, are
normally fitted with x2 resolvers. The part numbers of the two
(alternative manufacturers) 2x resolvers known to have been
used by Andrew are:
Harowe 11BRCX-310-M-85V
Clifton 11-BHM-19F/F776
The INTRAC-305 can be configured (by the user in “Fitted
Options”) to operate with the lower resolution (x1) resolver
that may be fitted to antennas intended for APC100 control.
The part numbers of the two (alternative manufacturers) 1x
resolvers known to have been used by Andrew are:
Harrowe 11_BRCX-310-R-85V
Clifton 11-BHW-46TK/F561 or F817
Pol The standard version of the INTRAC-305 is firmware
configured for x1 resolvers. Firmware to enable the use of a
x2 resolver for can be provided on request.